I bought a ’99 400ex that needs some work… Has timing chain noise and is worn to the limits. I have ready you can put a 450r timing chain on it and it’s a good upgrade. I’m wondering what sprockets I should use? Seems like a bad idea to keep the originals where my chain is worn. Do I use 450r sprockets or just order a set of originals. Seems to have plenty of power… Anything else I should change while I am in there?
400EX timing chain and sprockets upgrade 450r
I bought a ’99 400ex that needs some work… Has timing chain noise and is worn to the limits. I have ready you can put a 450r timing chain on it and it’s a good upgrade. I’m wondering what sprockets I should use? Seems like a bad idea to keep the originals where my chain is worn. Do I use 450r sprockets or just order a set of originals. Seems to have plenty of power… Anything else I should change while I am in there?
